Method for detecting content of rhenium in rhenium containing test solution

A detection method and test solution technology, which can be used in color/spectral characteristic measurement, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions. The results are not accurate enough to achieve the effect of accurate results and simple methods

Inactive Publication Date: 2016-07-13
SHANGLUO UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, in the prior art, the determination method for rhenium in the rhenium-containing test solution is relatively complicated, the steps are cumbersome, error-prone, and the test results are not accurate enough. Therefore, a new method needs to be born

Method used

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Embodiment Construction

[0015] The present invention will be further described below:

[0016] The present invention comprises the following steps:

[0017] A. The rhenium-containing test solution produced in the production process of ammonium perrhenate includes: leaching solution, solution after molybdenum precipitation, stripping solution and crystal mother solution;

[0018] B UV measurement: Accurately pipette 20 mL of the test solution in step A into a dry beaker, add 10 mL of distilled water, 2 mL of EDTA chelating agent with a concentration of 100 g / L, and 0.3 g of tartaric acid to adjust the pH, and then add tetrachloride with a concentration of 10 g / L. Benzene arsenic chloride hydrochloride solution 1mL, transfer the solution into a 125mL separatory funnel;

[0019] C was extracted with 8 mL of chloroform, repeated three times to combine the lower organic phase, washed the organic phase twice with 10 mL of tetraphenylarsenic chloride hydrochloride washing solution with a concentration of 0...

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Abstract

The invention discloses a method for detecting the content of rhenium in a rhenium containing test solution.The to-be-tested test solution is transferred into a beaker, distilled water, EDTA and tartaric acid are added, the pH value is adjusted, a tetraphenylarsonium chloride hydrochloride solution is added, and the solution is transferred into a separating funnel; extraction is conducted with trichloromethane three times, organic phases on lower layers are combined, the organic phases are washed with a tetraphenylarsonium chloride hydrochloride washing solution two times, and the organic phases are completely transferred into the beaker; after a sodium chloride solution is added, water bath evaporation to dryness is conducted for about 20 min, hydrochloric acid is added after evaporation to dryness is conducted, and after water bath heating, the mixture is cooled to room temperature and transferred to a colorimetric tube; distilled water, potassium thiocyanate and stannous chloride are added, and the mixture is shaken up and developed; after ethyl acetate is transferred into the colorimetric tube for extraction, the organic phases are taken for ultraviolet measurement at the 426nm position.Compared with the prior art, the method is designed aiming at the rhenium containing test solution generated in the production process of ammonium perrhenate, the method is simple and easy and convenient to operate, mistakes are not easy to make, especially, the test result is accurate, and use and popularization value is achieved.

Description

technical field [0001] The invention relates to a method for measuring chemical elements, in particular to a method for detecting rhenium content in a rhenium-containing test solution. Background technique [0002] Rhenium is a very rare metal element, mainly accompanied by resources such as molybdenum ore and copper ore. The main products include rhenium-containing alloys and ammonium perrhenate. Among them, ammonium perrhenate is widely used in petroleum and chemical industries, and it is also an important raw material for making rhenium metal. Ultra-pure ammonium perrhenate products can be used in various aerospace technology fields. Therefore, it is of great significance to accurately detect the rhenium content in the rhenium-containing test solution produced in the ammonium perrhenate production process. However, in the prior art, the determination method for rhenium in the rhenium-containing test solution is relatively complicated, the steps are cumbersome, error-pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/33
CPCG01N21/78G01N21/33
Inventor 樊雪梅王毅梦刘明宝南宁崔孝炜李哲建屈佳于艳常亮亮
Owner SHANGLUO UNIV
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